Hormones secreted by the placenta to maintain pregnancy are

Options

A. hCG , hPL , progestogens , estrogens
B. hCG , hPL , estrogens , relaxin , oxytocin
C. hCG , hPL , progestogens , prolactin
D. hCG , progestogens , estrogens , glucocorticoids

Answer

A

Explanation

The hormones secreted by the placenta to maintain pregnancy are hCG, hPL, progestogens anrl estrogens. Placenta is the intimate conneclion between the foetus and
uterine wall of the mother to exchange the m aterials. Il has endocrine function and secretes the following hormones
(i) Human Chorionic Gonadotropins
(hCG) It stim ulates and maintains the corpu s Jurcum to secrete progesterone u n tii the end of pregnancy.
(ii) Human Placental Lactogen (hPL) It is
also known Human Chorionic Somatomam- motropin ( HCS ), it stimulates the growth of mammary gland, durin g pregnancy.
(iii) Progesterone and estrogen support
foetal growth, maintain pregnancy, inhibit uterine contrnctiom, etc.
On the other hand the sources of other hormones are as follows
Oxytocln St·creted by posterior lobe of pituitary glond during foet al ejection reflex.
Glucocorti.cold Scnl:ted by adrenal gland of foct us to induce foernl ejection reflex.
Relaxin Secreted by corpus lutcum to increase flexibility of pubis symphysis.
Prolactin Secreted by an terior lobe of pituitary,helps in the secretion of milk.